451
FNCA52 TJSJ 191930
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 PM AST SUN APR 19 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-200800-
SOUTHEAST COASTAL PLAINS-
330 PM AST SUN APR 19 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 40 30 10 80
TEMP (24H TREND) 70 (-2) 88 (+3) 69 88
RH % (24H TREND) 91 (0) 55 (-9) 89 51
WIND 20FT/EARLY(MPH) E 13 E 16 E 12 E 12
WIND 20FT/LATE(MPH) NE 11 E 16 NE 9 SE 14
MIXING HGT(FT-AGL/MSL) 5270 5250
TRANSPORT WND (MPH) E 15 E 8
VENT RATE (KT-FT) 68510 36750
DISPERSION 5 5
DSI 5 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ015-200800-
SOUTHERN HILLS-
330 PM AST SUN APR 19 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 30 30 20 80
TEMP (24H TREND) 66 (-3) 84 (+4) 66 84
RH % (24H TREND) 96 (+3) 62 (-9) 96 60
WIND 20FT/EARLY(MPH) E 12 E 12 E 10 E 9
WIND 20FT/LATE(MPH) E 12 E 12 NE 10 SE 10
MIXING HGT(FT-AGL/MSL) 5500 5880
TRANSPORT WND (MPH) E 14 E 6
VENT RATE (KT-FT) 66000 29400
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ016-200800-
NORTH COASTAL PLAINS-
330 PM AST SUN APR 19 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 40 20 20
TEMP (24H TREND) 69 (-2) 87 (+2) 69 87
RH % (24H TREND) 97 (+1) 58 (-8) 98 57
WIND 20FT/EARLY(MPH) E 14 E 13 E 12 E 9
WIND 20FT/LATE(MPH) E 11 E 16 SE 10 NE 13
MIXING HGT(FT-AGL/MSL) 5280 4960
TRANSPORT WND (MPH) E 15 E 8
VENT RATE (KT-FT) 68640 34720
DISPERSION 5 5
DSI 6 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ017-200800-
NORTHERN HILLS-
330 PM AST SUN APR 19 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 70 20 30
TEMP (24H TREND) 67 (-2) 86 (+3) 66 85
RH % (24H TREND) 98 (+1) 61 (-7) 98 60
WIND 20FT/EARLY(MPH) E 12 E 11 E 11 E 8
WIND 20FT/LATE(MPH) E 9 E 13 SE 8 NE 11
MIXING HGT(FT-AGL/MSL) 5250 5780
TRANSPORT WND (MPH) E 13 E 6
VENT RATE (KT-FT) 57750 28900
DISPERSION 5 5
DSI 4 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ018-200800-
WEST COAST-
330 PM AST SUN APR 19 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 60 50 50 70
TEMP (24H TREND) 69 (-1) 88 (+1) 69 87
RH % (24H TREND) 95 (0) 60 (-6) 96 58
WIND 20FT/EARLY(MPH) E 11 E 12 E 9 E 10
WIND 20FT/LATE(MPH) E 10 E 12 E 10 SE 11
MIXING HGT(FT-AGL/MSL) 5050 4940
TRANSPORT WND (MPH) E 9 E 3
VENT RATE (KT-FT) 40400 14820
DISPERSION 5 5
DSI 3 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ019-200800-
EASTERN INTERIOR-
330 PM AST SUN APR 19 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 60 50 40 40
TEMP (24H TREND) 67 (-3) 85 (+3) 67 85
RH % (24H TREND) 97 (+1) 61 (-7) 97 60
WIND 20FT/EARLY(MPH) E 13 E 13 E 12 E 10
WIND 20FT/LATE(MPH) E 13 E 13 E 11 E 10
MIXING HGT(FT-AGL/MSL) 5850 5900
TRANSPORT WND (MPH) E 14 E 7
VENT RATE (KT-FT) 70200 35400
DISPERSION 5 5
DSI 4 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ022-200800-
LUQUILLO MOUNTAIN RANGE-
330 PM AST SUN APR 19 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 50 40 30
TEMP (24H TREND) 66 (-2) 80 (+2) 65 80
RH % (24H TREND) 98 (0) 66 (-6) 99 65
WIND 20FT/EARLY(MPH) E 11 E 11 E 9 E 9
WIND 20FT/LATE(MPH) E 10 E 11 E 9 E 8
MIXING HGT(FT-AGL/MSL) 5060 4020
TRANSPORT WND (MPH) E 15 E 8
VENT RATE (KT-FT) 65780 28140
DISPERSION 5 5
DSI 6 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ023-200800-
CENTRAL MOUNTAIN RANGE-
330 PM AST SUN APR 19 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 30 70 20 60
TEMP (24H TREND) 63 (-4) 83 (+4) 63 83
RH % (24H TREND) 98 (+2) 63 (-9) 98 61
WIND 20FT/EARLY(MPH) E 9 E 8 E 6 E 6
WIND 20FT/LATE(MPH) E 8 E 9 E 8 E 10
MIXING HGT(FT-AGL/MSL) 5850 6560
TRANSPORT WND (MPH) E 10 E 3
VENT RATE (KT-FT) 52650 19680
DISPERSION 5 5
DSI 2 5 1 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ024-200800-
CAYEY MOUNTAIN RANGE-
330 PM AST SUN APR 19 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 60 40 40 50
TEMP (24H TREND) 66 (-2) 80 (+2) 66 81
RH % (24H TREND) 98 (0) 67 (-6) 100 65
WIND 20FT/EARLY(MPH) E 10 E 11 E 9 E 8
WIND 20FT/LATE(MPH) E 10 E 11 E 8 E 9
MIXING HGT(FT-AGL/MSL) 5540 4850
TRANSPORT WND (MPH) E 15 E 7
VENT RATE (KT-FT) 72020 29100
DISPERSION 5 5
DSI 5 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ025-200800-
VIEQUES-
330 PM AST SUN APR 19 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 30 30 30
TEMP (24H TREND) 73 (-1) 85 (0) 73 85
RH % (24H TREND) 86 (0) 58 (-2) 86 57
WIND 20FT/EARLY(MPH) E 17 E 17 E 14 E 12
WIND 20FT/LATE(MPH) E 17 E 14 E 14 E 9
MIXING HGT(FT-AGL/MSL) 3920 3530
TRANSPORT WND (MPH) E 20 E 14
VENT RATE (KT-FT) 66640 42360
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ026-200800-
CULEBRA-
330 PM AST SUN APR 19 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 40 20 30
TEMP (24H TREND) 74 (-2) 87 (+1) 74 87
RH % (24H TREND) 85 (+1) 56 (-5) 87 56
WIND 20FT/EARLY(MPH) E 18 E 17 E 14 E 11
WIND 20FT/LATE(MPH) E 18 E 14 E 14 E 9
MIXING HGT(FT-AGL/MSL) 3890 3590
TRANSPORT WND (MPH) E 20 E 8
VENT RATE (KT-FT) 66130 25130
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ027-200800-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 PM AST SUN APR 19 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER PCLDY MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 40 10 20 80
TEMP (24H TREND) 70 (-1) 89 (+2) 69 88
RH % (24H TREND) 92 (+3) 55 (-6) 91 49
WIND 20FT/EARLY(MPH) E 13 E 17 E 12 E 12
WIND 20FT/LATE(MPH) E 13 SE 18 E 12 SE 12
MIXING HGT(FT-AGL/MSL) 5340 5480
TRANSPORT WND (MPH) E 15 E 8
VENT RATE (KT-FT) 69420 38360
DISPERSION 5 5
DSI 4 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ001-200800-
SAINT THOMAS AND SAINT JOHN-
330 PM AST SUN APR 19 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 20 20 20
TEMP (24H TREND) 73 (-3) 85 (+1) 73 85
RH % (24H TREND) 86 (+3) 57 (-5) 88 56
WIND 20FT/EARLY(MPH) E 18 E 17 E 14 E 12
WIND 20FT/LATE(MPH) E 18 E 14 E 14 E 9
MIXING HGT(FT-AGL/MSL) 3930 3590
TRANSPORT WND (MPH) E 20 E 8
VENT RATE (KT-FT) 66810 25130
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ002-200800-
ST CROIX-
330 PM AST SUN APR 19 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 20 20 20
TEMP (24H TREND) 74 (-1) 86 (+1) 72 86
RH % (24H TREND) 87 (0) 58 (-5) 89 58
WIND 20FT/EARLY(MPH) E 17 E 16 E 13 E 11
WIND 20FT/LATE(MPH) E 17 E 14 E 13 E 10
MIXING HGT(FT-AGL/MSL) 4760 4800
TRANSPORT WND (MPH) E 18 E 9
VENT RATE (KT-FT) 76160 38400
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
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